The credit for the new mark can be spread around - with Arsenal contributing mightily by allowing Bayern Munich to score 10 goals over two games, Barcelona and PSG combining for 11 goals over two legs, and Manchester City and Monaco scoring eight in just the first leg of their tie.

The new record is likely to increase, with second-leg matches between City and Monaco, as well as Bayer Leverkusen and Atletico Madrid still to play.